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   <div id="projectname">FLITr
   &#160;<span id="projectnumber">1.x</span>
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   <div id="projectbrief">Framework for Live Image Transformation.</div>
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<div class="title">hud.h</div>  </div>
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<a href="hud_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* Framework for Live Image Transformation (FLITr) </span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2010 CSIR</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * This file is part of FLITr.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * FLITr is free software: you can redistribute it and/or modify it</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * under the terms of the GNU Lesser General Public License as</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * published by the Free Software Foundation, either version 3 of the</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * FLITr is distributed in the hope that it will be useful, but</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * License along with FLITr. If not, see</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#ifndef FLITR_HUD_H</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define FLITR_HUD_H 1</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="flitr__export_8h.html">flitr/flitr_export.h</a>&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &lt;osg/Camera&gt;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;osgGA/GUIEventHandler&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;osgViewer/Viewer&gt;</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#include &lt;osgViewer/ViewerEventHandlers&gt;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">namespace </span>flitr {</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html">   36</a></span>&#160;<span class="keyword">class </span><a class="code" href="flitr__export_8h.html#a954cc8ba3eaae88472e9d8f406ca4a86">FLITR_EXPORT</a> <a class="code" href="classflitr_1_1_h_u_d.html">HUD</a> : <span class="keyword">public</span> osg::Camera</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;{</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#aa188cf1c31dfca494ffe3f6079a6cd59">   40</a></span>&#160;    <span class="keyword">enum</span> <a class="code" href="classflitr_1_1_h_u_d.html#aa188cf1c31dfca494ffe3f6079a6cd59">AnchorMode</a></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    {</div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#aa188cf1c31dfca494ffe3f6079a6cd59a02fba89ff5c7d5011ba7258373682d67">   42</a></span>&#160;        HUD_ANCHOR_CENTER = 0,</div>
<div class="line"><a name="l00043"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#aa188cf1c31dfca494ffe3f6079a6cd59a7612db5d39ad2b010ef1d1be422a32c0">   43</a></span>&#160;        HUD_ANCHOR_BOTTOM_LEFT = 1</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    };</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04e">   46</a></span>&#160;    <span class="keyword">enum</span> <a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04e">AspectMode</a></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    {</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04ea1d9824a78ded1965255d49d44f99cd55">   48</a></span>&#160;        HUD_ASPECT_FIXED = 0, <span class="comment">//Always show whole HUD in view.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04ea7fcec9e1c7b0bb7f1d6a6d99ef458dd2">   49</a></span>&#160;        HUD_ASPECT_FIXED_FILL_X = 1, <span class="comment">//Fill view in width with HUD.</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04ea897c5613d9f8ff608251204c694130f3">   50</a></span>&#160;        HUD_ASPECT_FIXED_FILL_Y = 2, <span class="comment">//Fill view in height with HUD.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04eaa324f900e98af1b3c53fee070d615d06">   51</a></span>&#160;        HUD_ASPECT_STRETCHED = 3, <span class="comment">//Stretch HUD to fill view in WIDTH and HEIGHT.</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04eaa62549c760f2d2b35d9893c0c93ad6bc">   52</a></span>&#160;        HUD_ASPECT_TRACK_VIEW = 4, <span class="comment">//Keep aspect of HUD the same as the view with dimensions in pixels.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    };</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html">   62</a></span>&#160;        <span class="keyword">struct </span><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html">ResizeHandler</a> : <span class="keyword">public</span> osgGA::GUIEventHandler</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        {</div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#a906a62f57c8f478c56466c597f77c17f">   64</a></span>&#160;            <a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html">ResizeHandler</a>(<a class="code" href="classflitr_1_1_h_u_d.html">HUD</a> *hud) :</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;                hud_(hud),</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;                old_view_width_(-1),</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;                old_view_height_(-1)</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;            {}</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;            </div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#a3c30e45183bd137069c9b6f1750c8e4e">   70</a></span>&#160;            <span class="keywordtype">bool</span> handle(<span class="keyword">const</span> osgGA::GUIEventAdapter&amp; ea, osgGA::GUIActionAdapter&amp;)</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;            {</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                <span class="keywordflow">if</span> (ea.getHandled()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;                <span class="keywordflow">switch</span>(ea.getEventType())</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;                  <span class="keywordflow">case</span>(osgGA::GUIEventAdapter::FRAME):</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                  {</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                      <span class="keywordtype">double</span> view_width = hud_-&gt;getViewport()-&gt;width();<span class="comment">//In pixels.</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                      <span class="keywordtype">double</span> view_height = hud_-&gt;getViewport()-&gt;height();<span class="comment">//In pixels.</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                      <span class="keywordflow">if</span> ( (view_height!=0) &amp;&amp;</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;                           ((view_width != old_view_width_) ||</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                            (view_height != old_view_height_))</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                         )</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                      {</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;                          old_view_width_ = view_width;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;                          old_view_height_ = view_height;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;                          </div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;                          <span class="keywordtype">double</span> view_aspect = view_width/view_height;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;                                                  <span class="keywordtype">double</span> ratio_change = view_aspect / hud_-&gt;aspect_;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;                                                  </div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;                                                  <span class="comment">// The default choice is a stretched HUD; HUD_ASPECT_STRETCHED.</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                                                  osg::Matrix proj = osg::Matrix::ortho2D(hud_-&gt;min_x_,</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;                                                                                                                                  hud_-&gt;max_x_,</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;                                                                                                                                  hud_-&gt;min_y_,</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                                                                                                                                  hud_-&gt;max_y_);</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;                                                  </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;                                                  <span class="keywordflow">switch</span> (hud_-&gt;aspect_mode_) {</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;                            <span class="keywordflow">case</span> HUD_ASPECT_TRACK_VIEW: {</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;                                <span class="comment">// Keep aspect of HUD the same as the view with dimensions in pixels.</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;                                hud_-&gt;setMinMax(0, view_width, 0, view_height);</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                                proj = osg::Matrix::ortho2D(0, view_width, 0, view_height);</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                            }</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                            <span class="keywordflow">case</span> HUD_ASPECT_FIXED: {</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;                                <span class="comment">//Always show whole HUD in view.</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;                                <span class="keywordflow">if</span> (view_aspect &gt; hud_-&gt;aspect_) {</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;                                    proj *= osg::Matrix::scale(1.0/ratio_change, 1.0, 1.0);</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;                                                                  </div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;                                    <span class="keywordflow">if</span> (hud_-&gt;anchor_mode_ == HUD_ANCHOR_BOTTOM_LEFT) {</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;                                        <span class="keywordtype">double</span> w = hud_-&gt;width_;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                                        <span class="keywordtype">double</span> shift = -0.5*(w - (w/ratio_change));</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;                                        osg::Matrixd shift_m;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                                        shift_m.makeTranslate(osg::Vec3d(shift, 0.0, 0.0));</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                                        proj*=shift_m;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;                                    }</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;                                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                                    proj *= osg::Matrix::scale(1.0, ratio_change, 1.0);</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                                                                  </div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                                    <span class="keywordflow">if</span> (hud_-&gt;anchor_mode_ == HUD_ANCHOR_BOTTOM_LEFT) {</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                                        <span class="keywordtype">double</span> h = hud_-&gt;height_;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                                        <span class="keywordtype">double</span> shift = -0.5*(h - (h*ratio_change));</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;                                        osg::Matrixd shift_m;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;                                        shift_m.makeTranslate(osg::Vec3d(0.0, shift, 0.0));</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;                                        proj*=shift_m;</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                                    }</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;                                }</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                            }</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                            <span class="keywordflow">case</span> HUD_ASPECT_FIXED_FILL_X: {</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                                <span class="comment">// Fill view in width with HUD.</span></div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;                                proj *= osg::Matrix::scale(1.0, ratio_change, 1.0);</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                                                          </div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;                                <span class="keywordflow">if</span> (hud_-&gt;anchor_mode_ == HUD_ANCHOR_BOTTOM_LEFT) {</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;                                    <span class="keywordtype">double</span> h = hud_-&gt;height_;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;                                    <span class="keywordtype">double</span> shift = -0.5*(h - (h*ratio_change));</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;                                    osg::Matrixd shift_m;</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                                    shift_m.makeTranslate(osg::Vec3d(0.0, shift, 0.0));</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;                                    proj*=shift_m;</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;                                }</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;                            }</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;                            <span class="keywordflow">case</span> HUD_ASPECT_FIXED_FILL_Y: {</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;                                <span class="comment">// Fill view in height with HUD.</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;                                proj *= osg::Matrix::scale(1.0/ratio_change, 1.0, 1.0);</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;                                                          </div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;                                <span class="keywordflow">if</span> (hud_-&gt;anchor_mode_ == HUD_ANCHOR_BOTTOM_LEFT) {</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;                                    <span class="keywordtype">double</span> w = hud_-&gt;width_;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                                    <span class="keywordtype">double</span> shift = -0.5*(w - (w/ratio_change));</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                                    osg::Matrixd shift_m;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;                                    shift_m.makeTranslate(osg::Vec3d(shift, 0.0, 0.0));</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                                    proj*=shift_m;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                                }</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;                                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;                            }</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                            <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                              <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                          }</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                                                  </div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                                                  hud_-&gt;getProjectionMatrix() = proj;</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                                          }</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                                          </div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;                      <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;                  }</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;                  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                    <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;                }</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;                                </div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;                <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;            }</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                        </div>
<div class="line"><a name="l00172"></a><span class="lineno"><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#a2f00442758e63f7b65eb79f3af2817cc">  172</a></span>&#160;            <a class="code" href="classflitr_1_1_h_u_d.html">HUD</a>* <a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#a2f00442758e63f7b65eb79f3af2817cc">hud_</a>;</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                        </div>
<div class="line"><a name="l00174"></a><span class="lineno"><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#a496ef5392933d494bc8c8888085fba7d">  174</a></span>&#160;            <span class="keywordtype">double</span> <a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#a496ef5392933d494bc8c8888085fba7d">old_view_width_</a>;<span class="comment">//In pixels.</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#ad36c258416e28055927154a0c1fb7b80">  175</a></span>&#160;            <span class="keywordtype">double</span> <a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html#ad36c258416e28055927154a0c1fb7b80">old_view_height_</a>;<span class="comment">//In pixels.</span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        };</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        </div>
<div class="line"><a name="l00178"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#ac3dd208bde8ca257448724c0710c357a">  178</a></span>&#160;        <span class="keyword">friend</span> <span class="keyword">struct </span><a class="code" href="structflitr_1_1_h_u_d_1_1_resize_handler.html">ResizeHandler</a>;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                </div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    <a class="code" href="classflitr_1_1_h_u_d.html">HUD</a>(osgViewer::View *view, <span class="keyword">const</span> <span class="keywordtype">double</span> minX=0.0, <span class="keyword">const</span> <span class="keywordtype">double</span> maxX=1.0, <span class="keyword">const</span> <span class="keywordtype">double</span> minY=0.0, <span class="keyword">const</span> <span class="keywordtype">double</span> maxY=1.0);</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;   ~<a class="code" href="classflitr_1_1_h_u_d.html">HUD</a>();</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;</div>
<div class="line"><a name="l00184"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a70ee363e1f905d30418d8300e0f88967">  184</a></span>&#160;    osgGA::GUIEventHandler* getResizeHandler()</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    {</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;      <span class="keywordflow">return</span> resize_handler_.get();</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    }</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a60f714f4c1b76b32219ae3370486945a">  189</a></span>&#160;    <span class="keywordtype">void</span> <a class="code" href="classflitr_1_1_h_u_d.html#a60f714f4c1b76b32219ae3370486945a">setAnchorMode</a>(<span class="keyword">const</span> <a class="code" href="classflitr_1_1_h_u_d.html#aa188cf1c31dfca494ffe3f6079a6cd59">AnchorMode</a> m) { anchor_mode_ = m; }</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;                </div>
<div class="line"><a name="l00191"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a6e1cc672eef406ce967aa504bdfc4c7b">  191</a></span>&#160;    <span class="keywordtype">void</span> <a class="code" href="classflitr_1_1_h_u_d.html#a6e1cc672eef406ce967aa504bdfc4c7b">setAspectMode</a>(<span class="keyword">const</span> <a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04e">AspectMode</a> m) { aspect_mode_ = m; }</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div>
<div class="line"><a name="l00193"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a74a29cd62e624bb1751be8da7923bda2">  193</a></span>&#160;    <span class="keywordtype">void</span> setMinMax(<span class="keyword">const</span> <span class="keywordtype">double</span> minX, <span class="keyword">const</span> <span class="keywordtype">double</span> maxX, <span class="keyword">const</span> <span class="keywordtype">double</span> minY, <span class="keyword">const</span> <span class="keywordtype">double</span> maxY)</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    {</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;            <span class="keywordflow">if</span> (maxX &lt;= minX) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;            <span class="keywordflow">if</span> (maxY &lt;= minY) <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                        min_x_ = minX;</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                        max_x_ = maxX;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;                        </div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                        min_y_ = minY;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;                        max_y_ = maxY;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                        </div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                        width_ = max_x_ - min_x_;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                        height_ = max_y_ - min_y_;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                        </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                        aspect_ = width_/height_;</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    }</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a6d623ce879c562558e20e2280381578f">  212</a></span>&#160;        osg::ref_ptr&lt;ResizeHandler&gt; <a class="code" href="classflitr_1_1_h_u_d.html#a6d623ce879c562558e20e2280381578f">resize_handler_</a>;</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;                </div>
<div class="line"><a name="l00214"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a0154d03f5a1f4805b747d7312106ef4a">  214</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#a0154d03f5a1f4805b747d7312106ef4a">min_x_</a>;</div>
<div class="line"><a name="l00215"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a65ef1fe0b50655c397233aef459e00b0">  215</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#a65ef1fe0b50655c397233aef459e00b0">max_x_</a>;</div>
<div class="line"><a name="l00216"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a76d384c5256c3a604e3546d54734758c">  216</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#a76d384c5256c3a604e3546d54734758c">width_</a>;</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;                </div>
<div class="line"><a name="l00218"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#ae36a14f4bd5741e4c47ea3e49ed89a55">  218</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#ae36a14f4bd5741e4c47ea3e49ed89a55">min_y_</a>;</div>
<div class="line"><a name="l00219"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a79598b591590355845e253b61ccc6d0d">  219</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#a79598b591590355845e253b61ccc6d0d">max_y_</a>;</div>
<div class="line"><a name="l00220"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a1efa3eba1b2dd3442659628f356cde09">  220</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#a1efa3eba1b2dd3442659628f356cde09">height_</a>;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;                </div>
<div class="line"><a name="l00222"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a3fd17872e8965474e67c40392f924071">  222</a></span>&#160;        <span class="keywordtype">double</span> <a class="code" href="classflitr_1_1_h_u_d.html#a3fd17872e8965474e67c40392f924071">aspect_</a>;</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;                </div>
<div class="line"><a name="l00224"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a2e5bddd0fcefd64830bb67f9f45d5103">  224</a></span>&#160;        <a class="code" href="classflitr_1_1_h_u_d.html#aa188cf1c31dfca494ffe3f6079a6cd59">AnchorMode</a> <a class="code" href="classflitr_1_1_h_u_d.html#a2e5bddd0fcefd64830bb67f9f45d5103">anchor_mode_</a>;</div>
<div class="line"><a name="l00225"></a><span class="lineno"><a class="code" href="classflitr_1_1_h_u_d.html#a41126fe0edc5bdeb0db2e435a197dc4e">  225</a></span>&#160;        <a class="code" href="classflitr_1_1_h_u_d.html#af95f20dc765aa25da6fce9e116b1b04e">AspectMode</a> <a class="code" href="classflitr_1_1_h_u_d.html#a41126fe0edc5bdeb0db2e435a197dc4e">aspect_mode_</a>;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;};</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;}</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="preprocessor">#endif //FLITR_HUD</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="preprocessor"></span></div>
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